86 THE entomologist's RECORC. 



or Jordan's names have priority from some previous author I do not 

 know. 



The organs of the antennae, which are the principal subject of Dr. 

 Jordan's paper, he tells us, are : — 



(1) " Scales, covering generally the dorsal surface of the antenna, but very 

 often also developed ventrally, and in many cases absent." 



(2) " Fine sense hairs," covering the not scaled portion of the antenna, or 

 parts of it, vai"3'ing much in length and width. These appear to be Bodine's sense 

 hairs of 1st [and 3rd ('?)] tyi^e, and some of his 2nd, possibly. They are not 

 stated by either author to be special sensory, but many of their statements show 

 that that is their belief. 



(3) " Setiferous i^unctures," found especially at the sides of the joints in those 

 families where the tine sense hairs are restricted in extent (Xijiiq)liali(l<u', Papi- 

 Uoiiidac). The puncture is generally rather conspicuous, the seta very short — 

 there is no distinct line of separation between (.5) and (2)." These appear to be the 

 same as Bodine's" Pits " and "Eods"andthe"Batonnets" of Chatin. They are also 

 l^robably special sensory organs, Bodine clearly so considers them; as regards butter- 

 tiies, since they are most abundant in the highest families, they are probably a 

 more specialised organ than the "sense hairs." Dr. Jordan restricts himself to 

 morphology, and makes no remarks, by the way, on function ; but since the hairs 

 and bristles are " sense " hairs, and " sense " bristles, and these merely punctures, 

 one receives an impression, probably erroneous, that Dr. .Jordan regards the punc- 

 tures as sense hairs that are degrading and becoming functionless, rather than as 

 a higher stage of their evolution. Bcdine describes them as being as well supplied 

 Avith nerves as the hairs. 



(4) " Sense bristles, standing on the sealed and not scaled portion of the joint, 

 varying much in length, often regularly arranged." These appear to be identical 

 with Bodine's hairs of the 2nd type. Why Bodine (if this be so) intercalated these 

 between his first and second type hairs somewhat puzzles me. On the butterfly 

 antenna these "bristles" ajipear to be tactile rather than special sensory, and 

 appear to be homologous with the ordinary tactile hairs of the surface elsewhere. 



(-5) " To these four special organs comes as a fifth feature of the antenna, the 

 often jjeculiarly sijecialised configuration of the surface of the joints." 



He then gives a description of the antenna in each family (or sub- 

 family) of butterflies, and, as he tells us these descriptions are 

 themselves summaries, it is difficult to abbreviate them without falling 

 into inaccuracies, still an attempt to do so may lead others to refer to 

 the paper itself for fuller particulars. I. Hcsjn'r Hilar: A typically 

 Hesperid character is the ventral widening of the joints of the club, 

 giving it the well-known hook of that family. The joints are cylin- 

 drical without raised lines or grooves. The scaling is very extended, 

 covering the whole dorsum except, in rare instances, the last joint, the 

 ventral surface is also scaled, except a greater or less portion of the 

 club. There are no setiferous punctures, the bristles appear to be 

 typically on the non-scaled area, a transverse row of seven, usually 

 apical, but maybe reduced even to two lateral ones. II. Li/cainidac : 

 The joints of the stalk are always cylindrical and usually of the club 

 also, like the Hespei'ids without lines or grooves. The scaling is ex- 

 tensive, both dorsaily and ventrally. There is an unsealed dorsal 

 portion at apex of club, a larger portion ventrally which may extend 

 down the stalk even to the base, and may on the 'Stalk be interrupted 

 by scales crossing the margins of proximal segments. The unsealed area 

 is covered with hairs, but there are no punctures. The bristles are 

 arranged much as in Hesperids, but tending to greater irregularity, 

 especially on the stalk. III. Kij/ciiiiilac : The form of the segments 

 is usually cylindrical, always so basally, but may be flattened, or im- 

 pressed distally. The impression may even amount to a groove, running 

 the length of the joint. The extent of scaling varies, the unsealed area 



