288 



Deutonympha. It seems that the deutonymphae are always gene- 

 rantes; my specimens at least have genitalia. 



The deutonympha feminina generans is described uud deliueated 

 by Berlkse (Ac. Myr. Scorp. Ital. fase. 39 n°. 1) good enough 

 to recognize the animal. 



Deutonympha masculina generans. Length 500 (/,. Dorsal side 

 resembling that of the deut. fem. gen. Ventral side (Fig. 9). The 

 sterual, genital, ventral and anal shields have coalesced and bear 

 8 stiff bristles on the sternal and 12 on the veatral part. — 

 Legs. The coxae (Fig. 9) lack the known spurs of the feinale; 

 the coxae 2 and 3 have only a stiff bristle. The coxa 2 has a 

 very sharp chitinous spur directed forward. The coxae 3 are large, 

 with a siugular hump or protuberance directed forward and 

 outward. 



Tritonymphae. They too seem to be always generantes, all having 

 genitalia and the females unvariably hearing au egg. The female 

 is dilineated recognizable by Berlkse (loc. cit.). 



Tritonympha masculina generans. Length 800 p. — Dorsal side 

 resembling that of the trit. fem. gen. Ventral side (Fig. 10)reseru- 

 bling that of the deutonympha. Legs wholly unarmed and of the 

 usual shape, except coxa 4, which is a little stronger than the 

 others. Tarsi 2, 3 and 4 provided with 4 strong spines (Fig. 11). 



Epistoma. This is the saine in <ƒ" and 9; rounded anteriorly. 



Hypostoma. The hypostoma of (ƒ and Q are simular. I don't 

 observe interior malae; the exterior ones or horns are knife-like, 

 transparent blades. 



Mandibles. Those of the Q are very well rep^esented by Berlese 

 (loc. cit.). Those of male I have figured in fig. 12 and 13. Like 

 in Laelaps (Stylochirus) rovennensis there is a long style or copul- 

 ation organ and a short transparent appendage at its base. I have 

 distinctly observed and drawn the »pulvilluin" or »flagellum" 

 (Fig. 12 and 13, a). This is placed on the ventral side of the 

 chela. I consider b as the rest of a fixed finger, c as the rest 

 of a movable finger, and d as the spur comparable with that of 

 the spur of all the other cf Laelaps (= Hypoaspis, see below). 



