152 RHYNCHOPHORA. 
Antenne rufescent, the club fuscescent. Rostrum very short, entirely covered with 
deep ruge; head very prominent between the eyes, these being small, quite circular, 
convex, and placed at some distance in front of the thoracic margin. Thorax cylindric, 
scarcely so long as broad, truncate in front and behind, very coarsely and deeply rugose. 
Elytra considerably broader than the thorax, witn free but rounded shoulders there 
is no visible sculpture, but the surface is densely covered with a squamosity irregularly 
spotted with whitish and blackish colour, the alternate interstices just perceptibly 
more elevated and furnished with short sete. Legs slender, rufescent, clothed with 
whitish sete. 
About a dozen examples have been received; the surface in old specimens becomes 
very sordid, and the serial sete can then scarcely be detected. The insect is probably 
subaquatic in its habits like its North-American congeners, Of the latter 1 have 
received types from Capt. T. L. Casey, after whom I have much pleasure in naming 
this interesting species. 
In P. caseyi the metanotum is entirely membranous, and the elytra are completely 
consolidated along the suture. 
PANTOMORUS. 
Pantomorus, Schonherr, Gen. Cure. v. p. 942 (1839) *. 
Athetetes, Pascoe, Ann. & Mag. Nat. Hist. (5) xvii. p. 415 (1886), 
This genus is closely allied to Naupactus, from which it differs in the species being 
apterous. The brief characters given for the genus by Lacordaire are erroneous, the 
insertion of the antenne being terminal as in the allied genera. Thus it is not 
surprising that a fresh name should have been proposed for the genus by Pascoe, who 
distinguished it correctly from Naupactus by the absence of shoulders. Schénherr 
understood the genus so imperfectly that he placed most of the species known to him 
in Naupactus. 
Pantomorus appears to be specially characteristic of our region, a few species only 
having as yet been found in 8. America, while none have been recognized as occurring 
in the United States. 
Two of the species described here—P. distans and P. robustus—are assigned only 
with considerable doubt to the genus; and I think it probable that when specimens 
can be obtained for examination they may prove to possess partially developed 
wings. 
Two natural groups of Pantomorus exist, viz.:— 
1, Male without mucro on the middle tibia. (Species 1-23.) 
2. Male with a mucro at the inner edge of the extremity of the middle tibia. (Species 24-82). 
