234 



a small dog-tooth and two long molars, each with three knobs; 

 the first molar overlapping the second, and this overlapping the 

 under-jaw. — Lower, movable jaw with a sideward standing 

 incisor ; behind this a smaller one ; then a small dog-tooth, foliowed 

 by a two-knobbed small molar; finally outward a small molar, 

 opposite to the second upper molar. 



Maxillae (Fig. 41). Coxae fused to form the ventral-side of the 

 capitulum, with distinct median underlip, somewhat rounded in 

 front, and distinct blunt outer malae. Trochanter, femur and genu 

 indicated by a scarcely visible line, but coalesced to the coxal 

 parts. Tibia free, long, with a small, fine, smooth hair in the 

 middle. Tarsus smaller, distally with three rodlike minute hairs 

 (tactile?; taste-organs?). 



Legs of the usual type, perfectly resembling those of Gl. domes- 

 ticus (de Geer). I have delineated, however, on purpose, tarsus I 

 (Fig. 42) and tarsus IV (Fig. 43) to show the length, nature and 

 situation of the few hairs. 



Female (Fig. 44 and 45). Length 425 — 500 p. — Shape perfectly 

 that of the male, but when swollen like that of Gl. domesticus Q. — 

 Colour like that of Gl. dom.; licht straw-coloured. — Dorsal side 

 (Fig. 44). Situation length and nature of the hairs like in the 

 male. — Ventral side (Fig. 45). Like in the male, except the 

 following particularities. The genital aperture is a long trapezium, 

 wider posteriorly; extending from the proximal ends of epimera 

 II to the level of the distal ends of coxae IV; shut by two door-like 

 valves ; limited anteriorly by a triangular chitinous piece. On each 

 valve a long transparent bar (insertion of muscles?). Under the 

 valves the extremely minute suckers. Anteriorly the valves are 

 flanked by two pairs of minute smooth hairs. The posterior end 

 of the opening flanked by a pair of such hairs. — The anal 

 opening anteriorly flanked by two pairs of such hairs, of which 

 the outer pair is the longer. 



Mandibles, maxillae, legs like in the male. 



Habitat the same as of Gl. domesticus. 



Patria hitherto only Netherlands. 



