644 AQUATIC PHYCOMYCETES 



protoplasm and numerous nuclei; pear-shaped in early stages, later 

 tubular. Branches short, never anastomosing. Thickness of mycelium 

 7-14 fx, sometimes more, especially at apex. Mycelium attached to fat- 

 body apparently by very minute hyphae. 



"Early sporangium globular or oval, thin-walled and measuring 20 

 X 30-28 x 40 [i. Vacuolated sporangium nearly same size, oval and 

 thin-walled. Sporangium of the next stage with thick refractile wall, 

 dense protoplasmic contents and numerous nuclei. Size 20 x 30-28 X 

 42 [i, sometimes larger. In the mature sporangium, the wall is thick, 

 opaque and yellow, and has thick ribs running lengthwise from one end 

 of the sporangium to the other. Sometimes the ribs branch considerably 

 to form a net-like sculpturing on the wall. The sculpturing on the spo- 

 rangial wall varies to some extent. . . . Size of sporangium 25 X 38-36 X 

 60 [i. The sporangium is typically oval in shape. Wall of sporangium in 

 section shows alternating yellow and brown striae. Thickness of wall 

 at the ribs 2.5-3 [ji and between the ribs 1 \x. Inner wall of sporangium 

 corresponding to that observed in C.stegomyiaeabsQnV'ilyQngarJoc.eit.). 



Parasitic in larvae of the following species of Anopheles: A. barbiros- 

 tris, A. nigerrimus, A. subpictus, A. aconitus, A. varuna, A. ramsayi, A. 

 annularis, and A.jamesi, India. 



COELOMOMYCES QUADRANGULATUS Var. QUADRANGULATUS Couch 



J. Elisha Mitchell Sci. Soc, 61 : 130, pi. 2, figs. 8-10. 1945 



"Hyphae 9.6-25 \x thick; sporangia roughly oval in outline but with 

 numerous angularities, usually somewhat flattened on one side, 12-21 

 X 19-40 \x, in end or cross section view squarish or with four lobes; 

 entire wall 3 5 \i thick, consisting of two layers : the outer layer pale 

 brown with four longitudinal ridges which give the spore the four- 

 angled orlobed appearance in end or cross section view, with very minute, 

 closely set pits which are frequently arranged in rows, and thus give 

 the impression of transverse striations as in a diatom shell; the inner 

 layer hyaline, circular; dehiscence by a preformed longitudinal furrow 

 which runs along one of the ridges. Germination not observed" (Couch, 

 loc. cit.). 



In larvae of Anopheles sp., United States. 



This species is discussed by Couch and Dodge (1947). 



