552 Mr. D. Sharp and Mr. F. Muir on the Comparative 



basal-piece of the cap consists of a large sclerite, broader at the base 

 where it curves round the sides of the median lobe. Internal sac 

 apparently elongate. 



This type is near to Pytho. 



Family MONOMMIDAE. 



Forms examined : Monoinma giganteum Guer., Angola ; 

 and sp., Penang, 



Figs. 174 and 174a PL LXIX. 



M. giganteum. 



Median lobe long, thin and tubular ; chitinous round the tip (a), 

 with dorsal and ventral face supported by chitin strips. Internal 

 sac undifferentiated. Lateral lobes large, joined together on the 

 ventral aspect by a semi-chitinous connection, the tips truncate. 

 Basal-piece half as long as the lateral lobes, forming a curved sclerite 

 on ventral aspect. Fig. 174 is rather too broad. 



ikf., sp. ■?, Penang, is similar to M. giganteum. 



We place this type with Stenosis and Zopherosis on 

 account of the ventral orientation of the tesmen. 



Family MELANDRYIDAE. 



Forms examined : Orchesia micans Panz., England. 

 Phloeotrya rnfipes GylL, England. Melandrya carahoides 

 L., England. 



Figs. 175, 176, and 177 PI. LXIX. 



Orchesia micans (PI. LXIX fig. 175). 



Median lobe long, thin, straight and membranous, supported by a 

 chitin rod on each side, which flattens out at base and forms a pair of 

 struts {ms). Tegmen consisting of a well-developed basal-j^iece 

 produced to a long point in front («), with a pair of long, thin lateral 

 lobes. Internal sac undifferentiated. 



Thloeotrya rufifcs (PL LXIX fig. 176). 



Median lobe very long and thin, supported along each side by a 

 thin chitinous rod (a), these project at base as two struts (i>w) ; 

 median orifice at apex. Tegmen forming a short sheath, open at 

 apical two-thirds (6) on ventral face, and produced into a long, 

 narrow, parallel-sided, basal sclerite on dorsal face. Internal sac 

 undifferentiated. 



Melandrya cardboides (PL LXIX fig. 177). 



Median lobe fairly short, membranous, supported on each side by 



