PYl IDA 



ipinion (Kiefer, Maxiller). In Dohrn, Adlerz and Schimkewitsch it oi 

 Extrem II As I. as well as Dohrn, reject the tli<"i\ ol Latreille, I have retained 



Tlu- pal] the first pah ol the imaginal fore limbs; they do not arise, until tin- embryonal 



■ in throw u off, and have ii" continuous connection with tin- latter. They always originate 



: tlu- anterioi edge of tlu- lower ^i-l<-- of tlu first segment of tlu- trunk, often at a great distance 



••■us legs; hut when tin- segment is shortened the) approach tin- ovigerous legs, even 



::tl\ originating from tlu- lateral process, on which those legs an- inserted [Colos- 



It is t" be supposed that the) are oi no great importance in tlu- life of the animal, ami 



thej also form tlu- pair of imaginal limbs, which are liable to tin greatest changes as to length, number 



•ints etc, ami soonest become rudimentarj or are thrown off In Ascorhynchus tridens 1 have in 



tin- fourth joint of these limbs found a particular organ of sense i?k as to details see the following 



■;.'ii "ii tlu- ovigerous legs. 



Ovigerous leg [pes orwYm, fig. i /". 



I.iniu-: tentacula pectoris; O. Fabricius: pedes spurii ii'ila ovifera); Latreille: pattes; later 



gn. an. ed. Hi: fausses pattes; I, each: organa ovifera; Savigny: pedes epiarti; Johnston: ovife- 



legs; Milne-Edwards: appendices pediformes; Erichson: drittes Kieferpaar; Kroyer: andet 



ParKjseber, 55ggetraad; Wilson: accessory legs; Bohm: Eitrager; Hock: pattes oviferes; Hansen: 



pedes ovigeri; Sars: falske Fodder (pedes spurii). 



The most common appellations of this second pair of imaginal lore limbs are owing to the 

 fact that they are used for carrying the eggs. Another starting point may he found in the peculiar 

 tion of these limbs, as seemingl) they can he classed neither among the gnathites nor anion- the 

 ambulatory legs, a fact already pointed out by ( ). Fabricius. 



The ovigerous legs are the latest developed limbs, even if their development takes place only 

 a little later than that of the palps. They arise mi a level with and behind the palps on a particular 

 hut their position in relation to the palps, especially with regard to distance, has already been 

 mentioned. They are of a more considerable length ami most frequently have more joints than the palps. 

 The number of joints is typicalh ten, exclusive of the claw, that is to say, one more than the number 

 irrive at in the ambulatory legs, when in these we count the claw as a joint, and considei the 

 auxiliary claws . sponding to tlu- claw of the ovigerous legs. Their most important function is 



in the male to carry the eggs, for which purpose some of the joints are often thickened or provided 

 with particular hair-formations especially in the male. Besides I have in different species of Nym- 

 phonidse [Nymphon groenlandicutn n. sp. pLIII, fig. j«w/; /',///,■//<■ hastata n. sp. pl.IV, fig. 17 a) and as 

 well in the male as in the female, found in the fourth joint of these limbs an inner organ consisting 

 lengthened bag, divided, as it were, into two parts by a constriction in the middle; this bag is 

 ligament nnective tissue, arising from its anterior and posterior end, attached to the 



'on: a broad nerve runs along the longitudinal side of tlu bag. No doubt this bay is an 

 I suppose, of hearing. In the Ascorhynchus quite a similar organ is found, only that 

 animal it is not found in the ovigerous legs, but in the palps (cp. above). But besides ser- 

 in the male and bearers of an organ of sense, they serve, as 1 suppose, 



