STRUCTURE OF LERNEOPODA DALMANNI. 87 



PLATE IV. — Explanation of Figures. 



Fig. 1. Profile view of Female, a little below natural size ; a, cephalo-thorax ; 6, " eye-like spot ;" 

 c, prehensile arms terminated by apposed claspers (bar not indicated) ; d, abdomen ; e, 

 abdomiual appendages ; /, ova-strings. 



Fig. 2. Ventral aspect of female ; cephalo-thorax seen raised above its normal position ; arms dis- 

 tinct up to tlie apposed claspers, which embrace the transverse bar, a ; h, abdomen, the 

 four segments faintly indicated. At its posterior extremity may be seen the integumen- 

 tary folds bounding the anal fissure, and having connected to them the abdominal appen- 

 dages. Close to these are the ova-strings. 



Fig. 3. Dorsal aspect of cephalo-thorax, enlarged; a, bulb-like protuberance ("eye-spot") 

 6, antennae (their connected bases are indicated) ; c, buccal apparatus, consisting of a 

 central conical mass bearing the mouth, by the sides of which are the two lateral, short, 

 stump-like processes (modified feet) ; d, integumentary fold for protecting the oral appa- 

 ratus. 



Fig. 4. Profile of cephalo-thorax, enlarged ; a, dorsal aspect, with antennae, base of modified feet 

 and protective fold indicated ; 6, projectile process (" chin"). 



Fig. 5. Antennae ; dorsal aspect magnified. 



Fig. 6. Buccal apparatus ; ventral aspect magnified ; a, dorsal and ventral lips, containing be- 

 tween them the oral slit ; 66, chitinic arrangement supporting the lips, and aifording 

 protection to their muscles ; c, labial palp ; d, stump-like process (modified foot), to which 

 a palp-like structure is connected. 



Fig. 7. Oral aperture, enlarged ; a, dorsal (upper) lip, presenting an inner plate bearing numerous 

 rods, and an outer, fringed with papillae ; 6, ventral (lower) lip, also bearing papillae. 

 Close to the latter, and projecting for a short distance through the buccal orifice, are seen 

 the jaws. 



Fig. 8. Portion of upper lip, greatly magnified ; a, labial palp. 



Fig. 9. Lower-lip, greatly magnified, and having connected to its base a pair of jaws ; aa, chitinic 

 masses for supporting the upper lip. 



Fig. 10. Stump-like process or modified foot, magnified ; a, posterior hook-bearing terminal divi- 

 sion ; 6, anterior portion studded with short bristles ; c, its palp. 



Fig. 1 1 . Portion of upper lip magnified, to which is connected a chitinic arrangement, presenting a 

 chink (" pharyngeal fissure") ; a, commencement of the oesophagus. 



Fig. 1 2. Posterior extremity of the abdomen, enlarged ; a, anal folds, to which the abdominal ap- 

 pendages are attached, and between which the slit-like anal aperture lies ; 6, ova-strings 

 passing from the genital orifices. 



Fig. 13. Dorsal aspect of the larva; a, antenna; 6, first pair of limbs. 



Fig. 14, Profile of the larva; the intestinal canal, bent upon itself, is indicated. 



Fig. 15. A, anterior limb of the larva. 



B, posterior limb of the larva. 



Fig. 16 Caudal appendage of the larva. One of the lappet-bearing masses has been raised, so as 

 to show the opposite aspect. 



